Our engineers recommend and integrate the Campbell Scientific datalogger when:
You need instrument variety.
A Campbell Scientific weather station can support virtually every meteorological instrument one could ask for at a PV solar farm (wind, rain, temperature, relative humidity, atmospheric pressure, etc.) Whether you want a cup anemometer or ultrasonic anemometer, you can easily pick and choose instruments you need for a particular project. They even have instruments as obscure as leaf wetness sensors that detect condensation on the back of a solar module.
You want low power usage.
Unlike most meteorological stations, a Campbell Scientific weather station runs on relatively low power, even when installed with multiple instruments. With a small battery backup, the data logger can continue to collect data during outages, and their battery charger supports input from a solar panel, enabling virtually perpetual operation without available local power.
You're looking for logging redundancy.
With up to 16GB of compact flash memory, the Campbell Scientific data logger will continue to collect data, even if disconnected during network outages. For a typical site, that would be enough storage to log 1 second data from all met station instruments for the entire life of the site.
You need customization.
Logic can easily be configured into the Campbell Scientific data collection algorithm. For example, if the 24VDC power source were to shut off, it can be configured to turn off the heaters and ventilators at the pyranometers to conserve battery life. The programming aspect adds a small level of complexity, but provides tremendous flexibility in where and when you want logging to happen.
You have multiple communications methods.
Not only does the Campbell Scientific data logger talk Modbus TCP and Modbus serial, it can also transmit in DNP3. This allows the utility to collect timestamped data from the data logger and collect weather station data without going through intermediate points. It can also periodically FTP logged data to an external storage location to ‘push’ backups of data offsite.